cfloop возвращает пустой массив перед стартом

Question

Добрый день. В настоящее время я форматирую некоторые JSON из запроса, и когда я дохожу до точки зацикливания запроса, я получаю очень странное явление. Я задаю startrow из 20 и endrow из 40. Когда он запускается, я получаю 19 пустых массивов до того, как он заполнится 20-40. Как я могу заставить цикл возвращать только строки 20-40?

<cfcontent reset="Yes" />
<cfset thedata = StructNew() >
<cfset thestruct = StructInsert(thedata, "sEcho", "#NumberFormat(val(url.sEcho),"_")#", 1)>  
<cfset thestruct = StructInsert(thedata, "iTotalRecords", "#NumberFormat(qCount.total,"_")#", 1)>  
<cfset thestruct = StructInsert(thedata, "iTotalDisplayRecords", "#NumberFormat(qFiltered.recordCount,"_")#", 1)>
<cfset thearray = ArrayNew(2)> 
<!--- Populate the array row by row --->

<cfloop query="qFiltered" startrow="20" endrow="40">
    <cfset thearray[CurrentRow][1]=req_name>
    <cfset thearray[CurrentRow][2]=req_departments_name>
    <cfset thearray[CurrentRow][3]=dest_departments_name>
    <cfset thearray[CurrentRow][4]=priority_rank_name>
    <cfset thearray[CurrentRow][5]=issue_subject>
    <cfset thearray[CurrentRow][6]=systems_sub_name>
    <cfset thearray[CurrentRow][7]=tickets_status_name>
    <cfset thearray[CurrentRow][8]=tickets_types_name>
    <cfset thearray[CurrentRow][9]=due_date>
    <cfset thearray[CurrentRow][10]=departments_sub_name>
</cfloop>
<cfset thestruct = StructInsert(thedata, "aaData", thearray, 1)>
<cfoutput>#serializeJSON(thedata)#</cfoutput>

, который возвращает этот JSON

{
"iTotalDisplayRecords":"202",
"iTotalRecords":"661",
"aaData":[
[],[],[],[],[],[],[],[],[],[],[],[],[],[],[],[],[],[],[],
["Derek Wolf","","","02- Revenue","Assist in validating error in JCA provided Discount Commission report","","Received","Work Request","Jan 1, 2012",""],
["Katie Hintz","","","02- Revenue","Order\/Install new POS Terminal at Katie's Workstation","","In Progress","Work Request","Oct 31, 2011",""],
["Katie Hintz","","","02- Revenue","Replace #6081 POS Printer at Kim's Desk","","Received","Work Request","Oct 31, 2011",""],
["","","","02- Revenue","Produce Brought To You By...  Video","","In Progress","Work Request","Nov 9, 2011",""],
["","","","02- Revenue","Produce Dept. Spotlight Video","","In Progress","Work Request","Nov 9, 2011",""],
["","","","02- Revenue","Produce Matty T's Pancake Breakfast","","In Progress","Work Request","Nov 9, 2011",""],
["","","","02- Revenue","Produce Fish! Video","","In Progress","Work Request","Nov 9, 2011",""],
["Sextus Selvaratnam","","","02- Revenue","Larger coin hopper system","","In Progress","Work Request","",""],
["Charles Canfield","","","02- Revenue","Ride theme improvment Castle","","In Progress","Work Request","",""],
["Omid Aminifard","","","02- Revenue","Contact Alterface about Desperados","","In Progress","Work Request","",""],
["Dino Kypreos","","","03- Repair","Repair or Replace Radio","","Received","Work Request","",""],
["Josh Cohen","","","03- Repair","SQL Server maintenance and tuning","","In Progress","Work Request","",""],
["","","","03- Repair","Move Weather Station to new Ops area","","Approved","Work Request","Nov 30, 2011",""],
["","","","03- Repair","Weather Station Move","","Approved","Work Request","Nov 30, 2011",""],
["","","","03- Repair","Strip and clean Moving Light fixtures","","Waiting Approval","Work Request","Dec 31, 2011",""],
["","","","03- Repair","Strip and clean Source Four light Fixtures","","Waiting Approval","Work Request","Dec 31, 2011",""],["","","","03- Repair","Replace Bad LCDs on ColorDash Pars LED light","","Received","Work Request","Dec 31, 2011",""],
["Josh Cohen","","","03- Repair","OMRON: repair terminal 4 computer","","On hold by originator","Work Request","",""],
["Amy Walters","","","03- Repair","Radio\/pager maintenance","","Waiting on parts","Work Request","",""],
["Mark Hersey","","","03- Repair","Inspect Ride Speaker Mounts for Safety","","Received","Work Request","Sep 30, 2011",""],
["Brian Gustav","","","03- Repair","Radio\/pager maintenance","","In Progress","Work Request","",""]],
"sEcho":"1"
}

---

UPDATE

Джон смог получить ответ для меня. Теперь, когда он работает, я хочу сгенерировать все теги CFSET из списка

<cfset listColumns = "tickets_id,departments_sub_name,aging,priority_rank_name,systems_sub_name,issue_subject,tickets_status_name,due_date" />

<cfloop list="#listColumns#" index="thisColumn" delimiters=",">
    <cfset rowarray[listColumnsCount]=#thisColumn#>
    <cfset listColumnsCount ++>
</cfloop>

Вместо вывода значения столбца я просто получаю имя столбца в JSON

Answer 1

Ваша проблема в том, что вы используете CurrentRow в качестве первого индекса для thearray.Таким образом, хотя ваш cfloop правильно пропускает первые 19 строк, вы говорите ему поместить первую в 20-ю позицию в массиве, так что перед этим вы получите 19 пустых.

Вы можете вручнуювычтите 19 из значения CurrentRow, но вам придется менять вычисление каждый раз, когда вы изменяете startrow.

. Лучшим вариантом будет построить внутренний массив отдельно, и просто ArrayAppend, чтодо thearray.Это будет работать независимо от ваших значений startrow и endrow.

<cfloop query="qFiltered" startrow="20" endrow="40">
    <cfset rowarray = ArrayNew(1)>
    <cfset rowarray[1]=req_name>
    <cfset rowarray[2]=req_departments_name>
    <cfset rowarray[3]=dest_departments_name>
    <cfset rowarray[4]=priority_rank_name>
    <cfset rowarray[5]=issue_subject>
    <cfset rowarray[6]=systems_sub_name>
    <cfset rowarray[7]=tickets_status_name>
    <cfset rowarray[8]=tickets_types_name>
    <cfset rowarray[9]=due_date>
    <cfset rowarray[10]=departments_sub_name>
    <cfset ArrayAppend(thearray, rowarray)>
</cfloop>